Ruder

Part of speech: adjective, noun

Definitions

1. Displaying an absence of civility or graciousness in conduct
2. Indicating a discourteous attitude or approach towards others in communication
3. Exhibiting an impolite demeanor or lack of respect for others in interactions

Etymology: "Ruder" is simply the comparative of "rude," so it is a form of that word and shares its history. "Rude" arrived in Middle English from Old French "rude" or "ruide," and before that from the Latin "rudis," which meant rough, raw, or untilled. The original sense was physical: a field that had not been cultivated, or a material in its natural, unworked state. Those meanings carried over into a figurative sense of something crude or unpolished, and from there the idea of unpolished manners gave us the modern sense of lacking courtesy. The comparative "ruder" therefore describes conduct that is less courteous than something else, and its root image is of something left in its raw, untended state.